linux-kernel - Re: [PATCH v7 03/60] sparc/PCI: Unify pci_register

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Message-ID: <CAE9FiQXpdw+e2BXDwvRnzUs8D1gdngz61nXFV5xKy9TLsvEvUw@mail.gmail.com>
Date:	Wed, 21 Oct 2015 15:59:39 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bjorn Helgaas <helgaas@...nel.org>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	David Miller <davem@...emloft.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Wei Yang <weiyang@...ux.vnet.ibm.com>, TJ <linux@....tj>,
	Yijing Wang <wangyijing@...wei.com>,
	Khalid Aziz <khalid.aziz@...cle.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 03/60] sparc/PCI: Unify pci_register_region()

On Wed, Oct 21, 2015 at 3:32 PM, Yinghai Lu <yinghai@...nel.org> wrote:
> On Wed, Oct 21, 2015 at 11:50 AM, Bjorn Helgaas <helgaas@...nel.org> wrote:
>> Lots of other architectures have both mem32 and mem64 apertures.  You
>> haven't explained what's unique about sparc yet.  Does
>> pci_find_parent_resource() not work on sparc?  If not, is that because the
>> resource tree looks different on sparc than on other architectures?  If so,
>> is that difference something intentional that we want to keep, or should we
>> converge on a single resource tree format across all architectures?
>
> In the new pci_register_legacy_regions(), we only have root bus.
> but current pci_find_parent_resource is taking pci dev.
>
> So will need to change it to take bus instead, please check if you are ok
> with following, then I would update other two.

Never mind, I could just one dummy pci device to work around it.
so don't need to change that.

Thanks

Yinghai
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